add ThinkNode M2 Support (#6354)

* [WIP] Base firmware pending support for 2nd button

* Update button behaviour. Still WIP

* [WIP] Base firmware pending support for 2nd button

* Update button behaviour. Still WIP

* change env to lowercase

Co-authored-by: rcarteraz <robert.l.carter2@gmail.com>

* yea - well - what else is new?

* fix secondary button behavior and update trunk

---------

Co-authored-by: rcarteraz <robert.l.carter2@gmail.com>

variants/ELECROW-ThinkNode-M2/pins_arduino.h

@@ -0,0 +1,28 @@
+// Need this file for ESP32-S3
+// No need to modify this file, changes to pins imported from variant.h
+// Most is similar to https://github.com/espressif/arduino-esp32/blob/master/variants/esp32s3/pins_arduino.h
+
+#ifndef Pins_Arduino_h
+#define Pins_Arduino_h
+
+#include <stdint.h>
+#include <variant.h>
+
+#define USB_VID 0x303a
+#define USB_PID 0x1001
+
+// Serial
+static const uint8_t TX = UART_TX;
+static const uint8_t RX = UART_RX;
+
+// Default SPI will be mapped to Radio
+static const uint8_t SS = LORA_CS;
+static const uint8_t SCK = LORA_SCK;
+static const uint8_t MOSI = LORA_MOSI;
+static const uint8_t MISO = LORA_MISO;
+
+// The default Wire will be mapped to PMU and RTC
+static const uint8_t SCL = I2C_SCL;
+static const uint8_t SDA = I2C_SDA;
+
+#endif /* Pins_Arduino_h */

variants/ELECROW-ThinkNode-M2/platformio.ini

@@ -0,0 +1,7 @@
+[env:thinknode_m2]
+extends = esp32s3_base
+board = ESP32-S3-WROOM-1-N4
+build_flags =
+  ${esp32s3_base.build_flags}
+  -D ELECROW_ThinkNode_M2
+  -I variants/ELECROW-ThinkNode-M2

variants/ELECROW-ThinkNode-M2/variant.h

@@ -0,0 +1,64 @@
+// Status
+#define LED_PIN_POWER 1
+#define BIAS_T_ENABLE LED_PIN_POWER
+#define BIAS_T_VALUE HIGH
+
+#define PIN_BUTTON1 47 // 功能键
+#define PIN_BUTTON2 4  // 电源键
+
+#define POWER_CFG
+#define POWER_CHRG 6
+#define POWER_FULL 42
+
+#define PIN_BUZZER 5
+
+#define I2C_SCL 15
+#define I2C_SDA 16
+
+#define UART_TX 43
+#define UART_RX 44
+
+#define VEXT_ENABLE 46 // for OLED
+#define VEXT_ON_VALUE HIGH
+
+#define SX126X_CS 10
+#define LORA_SCK 12
+#define LORA_MOSI 11
+#define LORA_MISO 13
+#define SX126X_RESET 21
+#define SX126X_BUSY 14
+#define SX126X_DIO1 3
+#define SX126X_DIO2_AS_RF_SWITCH
+// #define SX126X_DIO3 9
+#define SX126X_DIO3_TCXO_VOLTAGE 3.3
+
+#define SX126X_MAX_POWER 22 // SX126xInterface.cpp defaults to 22 if not defined, but here we define it for good practice
+#define USE_SX1262
+#define LORA_CS SX126X_CS // FIXME: for some reason both are used in /src
+#define LORA_DIO1 SX126X_DIO1
+#define SX126X_POWER_EN 48
+
+// Battery
+// #define BATTERY_PIN 2
+#define BATTERY_PIN 17
+// #define ADC_CHANNEL ADC1_GPIO2_CHANNEL
+#define ADC_CHANNEL ADC2_GPIO17_CHANNEL
+#define BATTERY_SENSE_RESOLUTION_BITS 12
+#define BATTERY_SENSE_RESOLUTION 4096.0
+#undef AREF_VOLTAGE
+#define AREF_VOLTAGE 3.0
+#define VBAT_AR_INTERNAL AR_INTERNAL_3_0
+#define ADC_MULTIPLIER (1.548F)
+#define BAT_MEASURE_ADC_UNIT 2
+
+#define HAS_SCREEN 1
+#define USE_SH1106 1
+
+// PCF8563 RTC Module
+// #define PCF8563_RTC 0x51
+// #define PIN_RTC_INT 48 // Interrupt from the PCF8563 RTC
+#define HAS_RTC 0
+#define HAS_GPS 0
+
+#define BUTTON_PIN PIN_BUTTON1
+#define BUTTON_PIN_ALT PIN_BUTTON2